From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph comparing Mean Effective Pressure power curves for Goshawk II and 40/50 engines under bench and dynamometer conditions.
| Identifier | Morton\M7\ img071 | |
| Date | 5th May 1921 guessed | |
| POWER CURVES GOSHAWK II & 40/50 (26 CU. INS. DISPLACEMENT.) SYSTEMS ON THE BENCH & DYNAMOMETER. CUT OUT OPEN DYNAMOMETER & BENCH TESTS TAKEN FROM THE SAME ENGINES AVERAGE OF 6 CARS OF THE SAME DYNAMOMETER READINGS AVERAGE BENCH READING FROM EXPERIMENTAL M.E.P. GII BENCH M.E.P. 40/50 BENCH M.E.P. GII DYNAMOMETER M.E.P. 40/50 DYNAMOMETER ...OMETER | ||